16203466217 has 2 divisors, whose sum is σ = 16203466218. Its totient is φ = 16203466216.

The previous prime is 16203466189. The next prime is 16203466267. The reversal of 16203466217 is 71266430261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10659323536 + 5544142681 = 103244^2 + 74459^2 .

It is a cyclic number.

It is not a de Polignac number, because 16203466217 - 2⁸ = 16203465961 is a prime.

It is not a weakly prime, because it can be changed into another prime (16203466267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8101733108 + 8101733109.

It is an arithmetic number, because the mean of its divisors is an integer number (8101733109).

Almost surely, 2^16203466217 is an apocalyptic number.

It is an amenable number.

16203466217 is a deficient number, since it is larger than the sum of its proper divisors (1).

16203466217 is an equidigital number, since it uses as much as digits as its factorization.

16203466217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 16203466217 its reverse (71266430261), we get a palindrome (87469896478).

The spelling of 16203466217 in words is "sixteen billion, two hundred three million, four hundred sixty-six thousand, two hundred seventeen".